CATALOGUE. 75 Annual, stem erect, smoothish, or with a few scattering hairs; lower leaves small, roundish, crenate; stem-leaves long, petioled, thin, irregularly deeply cleft or strongly halbert-shaped; flowers axillary, sky-blue, ^-f' in diam¬ eter (apparently resembling A. parviflora, Cav.). Calyx-lobes twice as long as the tube and distinctly bristly hirsute. Much against my will, I am obliged to retain this still as a variety, there being, so far as I can dis¬ cover, little deviation from the typical form save in the size of the flowers. Camp Crittenden, Southern Arizona, at 5,200 feet altitude. (666.) Var. paevifloea, Gray.—A low annual, 3-6' high, with a few ovate, crenate leaves on long petioles, was collected by Dr. Loew at some locality in Arizona. (165 a.) SiDA HEDEEEACEA, Torr. (in PI Fendl. p. 23).—Loew. New Mexico, Utah. SiDA LEPIDOTA, Gray (PI Wright. 1, p. 18).—A much-branching, prostrate species, from a descending root; leaves petioled, triangular- cordate or somewhat hastate (quite variable), at first densely covered with a stellate pubescence below and scurfy above; peduncles axillary, bearing a single purple flower 8" in diameter. Carpels with a short, obtuse beak. Deer Spring, Ariz., 6,000 feet altitude. (188.) SiDA FiLiFOEMis, Moric. var.—Stems thin, wire-like, procumbent or ascending, with long white hairs scattered along the stem and on the calyx; petioles 3"-l' long; leaves 6-12" long, lanceolate to oval, usually crenately serrate and more or less densely covered on either side with a short, stellate pubescence; calyx angular, lobes acuminate, nearly as long as the yellow petals; carpels moderately beaked. (665.) Sanoita Valley, Arizona. From Camp Bowie, I have a form which is much more hairy, has leaves larger in all respects, and almost beakless carpels. (470.) I have a full suite of specimens, and am unable to connect these forms. Hence, I believe they will, as we know them better, be regarded as distinct. Sph^ealcea aceeifolia, Nutt.—"Minutely roughish-tomentose, with a stellate pubescence; leaves 5-lobed, somewhat cordate; the lobes acute, toothed, unequally serrate; peduncles aggregated, terminal; carpels 12-14, pointless.—Stem much branched. Leaves 2-2J' long, and about the same in width: petioles about ^ of the length of the lamina. Flowers 3-4 together at the summit of the branches. Bracteoles linear-lanceolate.